Accident High Severity Stale

CHP : Severe traffic alert and Traffic Collision on CA-4 Eastbound east of Port Chicago Hwy (Concord). Left lanes blocked. Expect delays.

A high-severity accident was reported on CA-4 E near Contra Costa on June 18, 2026 at 10:26 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Jun 18, 3:26 PM

Last Updated

2 hours, 5 minutes ago

Jun 18, 4:00 PM

Coordinates

38.0106, -122.0155

Update History

1 observations

CHP : Severe traffic alert and Traffic Collision on CA-4 Eastbound east of Port Chicago Hwy (Concord). Left lanes blocked. Expect delays. Jun 18, 4:00 PM

Source: 511_sfbay · ID 511.org/1510078 First seen Jun 18, 2026 4:00 PM

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